Extracting implement



Aug. 27, 1929. 2.,1. M CORMICK EXTRAGTING IMPLEMENT gwuwntoz E-LI-M'EEurmick Filed Nov. 7, 1928 Patented Aug. 27, 1929.

EDWARD J. MCCORMICK, OF SPENCER, NORTH CAROLINA.

EXTRACTING- IMPLEMENT.

Application filed November 7, 1928. Serial No. 317,814.

(GRANTED UNDER THE ACT OF MARCH 3, 1883, AS AMENJJED APRIL 30, 1928; 3700. G. 757.)

The invention described herein may be manufactured and used by or forthe Government for governmental purposes, without the payment to me ofany royalty thereon.

The subject of this invention is an extracting implement.

When dummy rounds of ammunition and ruptured cartridge cases becomelodged in the chamber of a cannon, their removal is a matter of somedifficulty, requiring the efforts of a number of men. The operation ofremoving a ruptured case from a position in front of the muzzle of thegun involves lowering of the gun and exposure of the operators, and is,therefore, undesirable. The operation of withdrawing a dummy round isusually conducted through the breech of the gun and if the implementemployed loses its grip on the round, the operators fall backward andare frequently injured.

The purpose of this invention is to provide an extractor which isoperable through the breech and which may be readily and firmly engagedwith the round or case to be withdrawn.

WVith the foregoing and other objects in View, the invention resides inthe novel arrangement and combination of parts and in the details ofconstruction hereinafter described and claimed, it being understood thatchanges in the precise embodiment of the in- Vention herein disclosedmay be made within the scope of what is claimed without departing fromthe spirit of the invention.

A practical embodiment of the invention is illustrated in theaccompanying drawings, wherein:

Fig. 1 is a longitudinal sectional view through the improved extractor;

Fig. 2 is a detailed, sectional view on the line 22 of Fig. 1, the hookshown in its open position; i

Fig. 3 is a view in side elevation, illustrating the application of theextractor to a dummy round;

Fig. 4 is a similar view showing the extractor in position to withdraw aruptured cartridge case.

Referring to the drawings by numerals of reference The extractorcomprises a cylindrical body 5, the forward extremity 6 being rounded toprevent in ury to the chamber of the cannon upon insertion and the rearportion "1' being position for engaging the unit to be removed from thechamber. By reference to Fig. 3, it will be seen that the linger must befolded within the body 5 in order to permitinsertion in the aperture 14provided in the base of a dummy round 15. I

In Fig. 4, the extractor is shown in position to remove a rupturedcartridge case 16. Since the gun, on being fired, is generally inclinedand the pull exerted by the crew on the handle of the extractor has anupward tendency, it will be observed that the rear portion 7 will engageand be supported by the cartridge case, thereby resulting in a firm gripbeing maintained by the finger on the foremost edge of the case.

I claim:

1. An extractor, including a body formed with a slot in its forwardportion, a pin spanning the slot, a finger mounted on the pin and havinga flat surface engageable with the end wall of the slot when the fingeris perpendicular to the body and a screw threaded in the finger andengaging the pin. 7

2. An extractor, including a body formed with a slot in its forwardportion and a finger formed to fit within the slot pivotally held at theforward end thereof and having a flat surface engageable with the endwall of the slot when the finger is perpendicular to the body.

EDWARD J. MCCORMICK.

